That looks so good
I hear of all these posts about people cleaning their Uppers and lowers but see no mentions about performance gains. I'm sure they go without saying but there seems to be more posts about what went wrong in the prosses.
In response to the above post, I imagine that pouring b-12 into the engine while off would let it set into the carbon built up on the valves and other parts of the engine wihout burning off. does this make sense or are the images in my head wrong?
